ADM-880C 07/20/09
2
2.0 SPECIFICATIONS
AIR VELOCITY: Measured in feet per minute (fpm), or meters per second (m/s), corrected for local or standard air density.
The measurement range is 25 to 29,000 fpm with a Dwyer Series 160 standard pitot tube, and 25 to 5,000 fpm with
the Shortridge Instruments, Inc. AirFoil probe. The measurement range using the VelGrid is 25 to 2500 fpm.
Accuracy is ± 3% of reading ± 7 fpm from 50 to 8000 fpm. Pitot tube velocity readings from 8,000 fpm to 29,000 fpm
are based on compressible isentropic flow theory and are not certified NIST traceable.
DIFFERENTIAL PRESSURE: Measured in inches of water column (in wc) or Pascals (Pa). The measurement range is
from 0.0001 to 60.00 in wc. Maximum safe pressures are 20 psid (900% full scale) and 60 psia common mode.
Accuracy is ± 2% of reading ± 0.001 in wc from 0.0500 to 50.00 in wc.
ABSOLUTE PRESSURE: Measured in inches of mercury (in Hg) or bars with reference to a vacuum. The measurement
range is 10-40 in Hg. Maximum safe pressure is 60 psia. Accuracy is ± 2% of reading ± 0.1 in Hg from 14 to 40 in
Hg.
TEMPERATURE: Accuracy is ± 0.5
/
F from 32
/
F to 158
/
F with a resolution of 0.1
/
F using the ADT442, ADT443, ADT444,
ADT445 or ADT446 TemProbes. AirData Multimeters display readings from -67.0
/
F to 250.0
/
F. Safe exposure
range for the TemProbes is -100
/
F to 250
/
F. Do not expose the plastic base of the TemProbe or the extension
wand to temperatures above 200
/
F.
AIR FLOW: Measured in cubic feet per minute (cfm) or liters per second (L/s), corrected for air density. This function
requires the use of the Shortridge Instruments, Inc. Series 8400 Backpressure Compensating FlowHood System.
The measurement range is 25 to 2500 cfm supply and 25 to 1500 cfm exhaust. Accuracy is ± 3% of reading ± 7 cfm
from 100 to 2000 cfm (nonbackpressure compensated readings).
AIR DENSITY CORRECTION: The air density correction range is 14-40 in Hg and 32
/
F to 158
/
F for correction of air flow
and velocity measurements. The readings represent
either
local density air flow
or
standard density sea level
equivalent (mass flow) for air flow or velocity. Readings are corrected for the density effects of temperature and
absolute pressure.
MEMORY: 2000 readings with sequential recall of each reading along with the average, sum, minimum, maximum and
standard deviation. Data may be stored in 25 separate memory groups.
RESPONSE TIME: Varies from one second at higher pressure inputs to seven seconds at less than 0.0003 in wc (70 fpm).
Extremely low pressure/flow/velocity inputs require longer sample times than higher pressure/flow/velocity inputs.
TREND mode provides continuous readings in less than two second intervals. (Accuracy specifications do not apply
in TREND mode).
READOUT: Ten digit, 0.4 inch, liquid crystal display (LCD).
METER HOUSING: High impact, molded, "T" grade ABS.
METER WEIGHT: 36 ounces (1.02 kg), including batteries.
SIZE: 6.0" x 6.4" x 2.7" (15.2 x 16.3 x 6.9 cm).
BATTERY LIFE: A ten-hour charge will normally allow two working days of heavy use, or up to 3000 readings per charge
if the backlight is not being used. Increasing the charge time to 48 hours (such as a weekend) will increase the
working time by 25%. Continuous use of the backlight may reduce the battery life by up to one half.
A set of rechargeable type AA NiCad batteries is supplied in each meter. Each battery has a storage capacity of
1100 milliAmp hours. These batteries may be recharged up to 500 times before replacement. If 1100 mAh batteries
are not available in a field situation, 700 mAh batteries (all 12 ) may be substituted. If 700 mAh batteries are mixed
with 1100 mAh batteries, the 700 mAh batteries may be damaged as the battery charge is depleted. If rechargeable
batteries are not available in a field situation, the batteries may be replaced with 12 non-rechargeable "AA" pen cell
batteries.
WARNING
: Do not plug the charger in if
any
non-rechargeable batteries are in the meter. The meter will be
seriously damaged along with the batteries and charger.
The approximate level of charge remaining in the batteries may be displayed by pressing SHIFT/SHIFT. The display
will read BATT FULL if the batteries are highly charged. The display will read BATT 2/3, BATT 1/3, or LOCHARGE
Summary of Contents for AIRDATA ADM-880C
Page 42: ...ADM 880C 07 20 09 37 FIGURE 6 3 VELGRID ASSEMBLY...
Page 50: ...ADM 880C 07 20 09 45 FIGURE 10 1 FRAME STORAGE FIGURE 10 2 FLOWHOOD IN CASE...
Page 51: ...ADM 880C 07 20 09 46 FIGURE 10 3 FLOWHOOD ASSEMBLY...
Page 53: ...ADM 880C 07 20 09 48 FIGURE 10 7 1X5 FRAME ASSEMBLY FIGURE 10 8 3X3 FRAME ASSEMBLY...
